Geoege juengst



G. JUBNGST.

SHAEING AND PLANING MACHINE.

(No Mqdel.)

Patented sept."23.18"84.

Fig. i.

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N4 PETERS. FhowLimompmr, wn-hngien. D. C.

l wie cutting motion by means of a durable mechan- Smarts Nrrn GEORGE JUENGST, OF NEW YORK, N. Y.

,SaAPlNo AND PLANING MACHINE.

JPECFICATION forming part of Letters Patent No. 305,520, dated September 23, 188%.

(No model.)

To @ZZ whom t may concern.:

Be it known that I, Gnonen JUnNes'r, a citizen of the United States, and a resident of the city of New York, in the county and State of New York, have invented certain new and useful Improvements in Shaping and Planing Machines, of which the following is a specification. v

My invention relates to improvements in shaping and planing machines in which the tool has a horizontal reciprocating motion caused by' a crank, and the work is secured upon an adjustable cross-slide forwarded to the tool by a screw-feed actuated by a pawl-andratchet mechanism.

The object of my improvements is, first, to' secure for the tool a steady and proper slow ism, and to secure a maximum quick return motion of the tool from the work, so that thereby a minimum time is required to perform accurate and smooth work, and the object is, secondly, to avoid the disconnection of the feed-screw with its screw-nut and avoid the frequent breakage or derangement of thefeed-4 ing device by a novel friction-joint between the ratchet-wheel and the feed-screw. I'attain these objects by the mechanism illustrated inthe accompanying drawings, in which- Figure l represents a sectional side elevation of the shaping-machine with my improvements. Fig. 2 is a top view of the tool-slide and the operating mechanism ofthe same. Fig.

3 is a diagram for exhibiting the motion of the tool and its slide. cal section of the pawl and ratchet of the feeding device. Fig. 5 is afront view of the same.V

A represents the frame of the machine, and

v B the work-carriage or cross-slide carrying the .aro

chuck B', upon which the work is secured.

D is the vertical slide, upon which the crossslide is held adj usted and fed across.

. E represents the screw for raising the slide D and the work relatively to the tool, and F represents the reciprocating tool-slide, which carries the tool-stock and tool Gon its forward end.

His the slotted crank; I, the con neeting-rod 5 J, the crank-pin, and K the tool-slide stud for operating the reciprocating tool-slide F.

Fig. 4 is a detached verti- Lv represents the vertical crank-shaft, to which the crank H is attached at its top end. It revolves in the bearings M M, formed in the frame A, and its bottom end has securedupon it a crank-plate, N, with a crank-pin, O, and between its bearings M M the shaft L is provided, with the bevel-pinion P, secured upon it, for operating the horizontal feed-shaft Q,

which'has the bevel-gear R, to engage with d said pinion l).

The machine is furnished with the usual horizontal driving-shaft, S, arranged in the bearing T on the side of the frame. The shaft S hason its outer cud the usual cone belt-pulleys, to which the power is applied. The inner end of saidshaft has upon it the bevel-pinion U, for transferring the power to the vertical counter-shaft V, which is furnished with a bevel-gear, XV, to engage with said pinion U. Said shaft V transmits the power to a secondary vertical shaft, X, by means of the pinion Y, secured upon the. top end of the shaft V, said pinion engaging with a horizontal spurgear, Z, upon the top end of the shaft X.' Said spur-gear Z revolves under the shaft Land its crank-plate N, and upon its top face is secured the crank-pin a, connected by a-link, b, with the crank-pin O, by which means the motion is transmitted from the shaft Xto the shaft L, before mentioned. The shaft L is arranged with its axis in the central vertical plane of motion of the tool-slide F. The axis of the shaft X is arranged eccentrically to that of the shaft L and in a vertical plane atalateral distance from that of the `shaft L, as shown in Figs. 2 and 3, so that the dead-center line of the crank-.pin a lies nearly lateral to that of the crank-pin J and lateral from the shaft L, and tothat side of it which is described by the crank H in forwarding the tool to the' work, as shown in Figs. 2 and 3, in which the distance from e tof represents one-twelfth part of the motion of the crank-piu a, and in which g h represent the distances-Corresponding-proceeded by the crank-pin J, the tool, and toolslide during the cutting time or forward motion, and in which the distances fromtto j represent the proceeding of the crank-pin J, tool, and tool-slide during each one-twelfth of the crank-pin a during the return motion or motion i machine.

` screw-nut '0, in which the screw n engages t0 n place.

while the tool is receding, from the work, all clearly shown in Figs. 2 and 3. By this means the proper slow motion for cutting commences soon after the tool and its stock have set up solid ready for cutting. Said tool hereafter proceeds slowly until the return motion is reached. Soon after the return motion has commenced the same proceeds at avery rapid speed untilhaving reached its termination, upon which the former-described motion takes Both shafts X and V have their bearings m m m m formed in the frame A of the By havingthe mechanism for producing the quick return motion constructed of compound cranks and links, which operate alternately, re-

turn motion is obtained without the destructive and unsteady power caused from momentum of the moving parts.

rIhe Verticalslide D,which carries the crossslide B, is furnished with the-horizontal feedscrew n, to feed the cross-slide and the work upon it to the tool. Said screw a has its bearings in the ends of the slide D, and has proper collars secured to it, to bear against the slide D and prevent any longitudinal motion of the screw. The cross-slide B has attached the feed said slide. Upon the outer shank or end of the screw n, on the-side toward the feedcrank, is arranged the ratchet-wheel p and the vibrating pawl-lever s, 'with the pawl t ony its upper arm and with the feed-rod s'tud on the lower arm. On the yextremity of the screw, forward of the ratchet-wheel p, is fitted a proper threaded screw-nut, Z, with a washer between it and the hub of said wheel p. rIhe pawl-lever sis tted, as usual, to turn `loose upon the shank of thc screw n,- but the ratchet-v wheel is fitted, not, as is usual, with a key to i lock it upon said shank, but with a taper .slide D or other solid obstruction against the cross-slide the friction of the bearing of the ratchet-wheel upon the screw n is insufficient to move them together, and the ratchet-wheel may turn and slip upon the screw. By this Vmeans the frequent breakage of the feeding mechanism is obviated. By vmeans of the screw-nut Z the friction of the bearing between the ratchet-wheel and screw is readily renewed or released and regulated to snit the requirement at anytime.

What I claim as my invention, and desire to secure by Letters Patent, is-

1. In shaping and planingmachines,thecombination, with the reciprocating tool-slide F, the shaft L, provided with ldisk N, the crank H, the connecting-rod I, and stud J, of the crank-pins() and a, the link b, the shaft X, provided with gear Z, arranged eccentrically and adapted to operate with the shaft L to secure the to-and-fro motion 0f the cutting-tool, as herein set forth.

2. The arrangement and combination of the tool-slide F, the shaft I., provided with disk N, the crank H, connecting-rod I, the stud J, the feed-screw n, the bevel-gear B, the shaftQ, and pinion l?, the ratchet-wheel p, the pawl t, lever s, and nut Z,with the crank-pins O and a, the link I), the shaft X, provided with gear Z,

relative with the shaft L, substantially asand' for the purpose herein described and shown.

'In testimony that I claim the foregoing as my invention I have signed my name in presence of two witnesses.

GEORGE J UENGST. Nitnessesz ,Y

FRIEDRICH HFNER, CHAnLns SoHUL'rzn. 

